Tufting-machine



J. GWIZDOWSKI Q TUFTING MACHINE.

APPLICATION FILED DEC.28. 191s.

Patented Nov. 30, 1920.

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' 1'0 all whom it 11203] concern:

Be it known that ,L'Josnri Gwrinowsirr,

a citizen of. the United States, anda resiy dent of Detroit 1n the county of l Vayne and- State of .idichlgan, have invented certain new and useful Improvements in Tufting-Machines, of which the following is a specification. '7

These improvements are especially applicable to the machine shown bythe patent to Mathewson, No. 1,193,708, dated August 8, 191.6, and have the same object asthat set forth in the patent to Dillon, No. 1,211,924

. dated .January 9, ,1917, and, consist in means for forming a knot'in a loop in the tui'ting twine at one side of a mattressand for causing the needle to drawjthe knot through to the opposite side of the mattress.

As the mechanism of the complete machine is fully described in the Mathewson patent, the drawings of the present device 'show the various parts merely conventionally. and Figure 1 is a side elevation of the tutting machine and Fig. 2 a section of s the twine gripping mechanism on the line 2-2 of Fig. 1.

Similar reference characters refer to like parts throughout the several views.

The frame of the machine comprises an upright l and an arm 2 which has a head 3 at its outer end. The base 4: carries a knottcr 5, and in practice a suitable table or 'ilati'orm will be employed'to support the mattress 6 which is to be tufted, above the knotter; The head 3 carries the usual compressor which may be moved by a lever 7 which is pivoted on the frame and operated in any suitable manner. vThe head 3 also carries a needle 8 and lever?) for ,operating the needle to cause it to penetrate the In the mechanism Mathewson patent, the .nntuffted mattress is compressed upon'the stationary head associated with the knotter, tuft is fed into place on each side of the mattress. The

needle 8 is then forced downwardly through v the mattress, carrying with it the tufting twine and in its descent the, needle pierces the mattress and enters the knotting mocha nism where the loose end of the twine is gripped. The needle then rises, leaving the v strand of twine'in its path. The mattress and needle then move laterally relative to each other sutliciently to carry the twine Specification of Letters Patent. Q

' mattress.

PatentedNov. 30.1920. Application filed Decemher 28, 1918.1 seria na zesyz'es. 2

across the upper tuft and. the "needle then i.

descends, carrying. the [second strand of twine through the mattress parallel to the first strand. The knotter thenknots the iirst and second strands together across thelower knot to the twine cutter at the top of the i i aforesaid patent to Dillon.

The twine 10 passes to the upper endof the needle bar 12 from a copor ball 13 and its movements must be freeunderlnormal conditions so that willnot pull out of the eye of the needle. In order to pullthe knot from the bottomto the top of the mattress means must heprovided to force the twine to move up with the needle after the This ,Waste is deseiibed in the" knot has been tied as the mere releasing of the end of the first strandbefore the needle reaches the upper end of its stroke is not sullicient' to prevent the twine slipping through the eye of the needle. I have found that simply gripping the. twine between the cop and the needle bar just before the 'final upward movement or! the needle is sufficient to force the twine to move upward with the needle. i

In the drawings; the cop 13 is below the. opening at the upper end of theneedlebar into whichthe twine passes. I have mounted a pin 16 in the arm 2 and on its end is a head or abutment 17 having an inclinedsurface :IdjttCQllt the wedge :18 "WlllCll 1s shdable' on this pm. A d1sk19 1S rotatable on the axis Y20 and a rod 22 connects the pin 23 on this disk to the wedge A link 24 carries'a roller25 at the lower end which is engaged hythe cam ring26' on the disk 27 secured to themain shaft of the machine. T he upper end of the link 24conneots to the pin 28 ion the disk 19. A spring 29 connectsto the wedge to withdraw. it;

the disk l9't0v pull over the wedge 18 to it each cycle of the machineas the needle .is rising after the knot has been tied, the

cam 26 pulls down thelink 24 and turns I rises the twine being held back, the knotnecessarily is pulled up tromthe bottom to the top of the mattress. The twine is then immediately released. The twine is cut above the mattress when the knot has come to the top. r i

It will be understood that many other devices may be substituted for that shown and described for preventing the twine from slipping down through the eye of the needle as the needle rises after the knot has been tied, butl have found that means to grip I the twine between. the cop and the needle is very eli'ective i. In a tutting machine, in combination with a reciprocating needle for carrying twine several times through a mattress where it with .a reciprocating needle for carrying twine several times through a mattress where ment.

it may be knotted below the mattress, and intermittently acting means for preventing the twine from slipping through the needle as the needle rises after the knot has been tied to cause the needle to pull the knot up to the top of the mattress, said means consisting of a device for gripping. the twine at a point between the cop and needle bar.

3. In a tufting machine, in combination with a reciprocating needle for carrying twine several times through a mattress where it may be knottedbelow the mattress, and intermittently acting means for preventing the twine from slipping through the needle as the needle rises after the knot has been tied to cause the needle to pull the knot up to the top of the mattress, said means comprising'a wedge and anabutment between which the twine normally passes freely, and a cam for moving the wedge to cause the twine to be gripped between it and the abut- JOSEPH GWIZDOWSKI. Witnesses lVLADYsLAUs MAIo'R, JOSEPH TARDULSKI. 

